Fur-sewing machine.



P. B. MILLER, JR. PUB. SEWING MACHINE.

APPLICATION FILED APB.3, 1908.

Patented Mar. 28, 1911;

4 SHEETS-SHEET 1 nuuomus u'rnu co., wunma-rau, n. c.

P. B. MILLER, J11.

PUB SEWING MACHINE. Arruouron FILED 1211.3, 1908.

988,278, Patented Mar. 28, 1911.

4 SHEETS-SHEET 2.

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P.v B. MILLER, JR.

FUR SEWING MACHINE. APPLICATION IILEI) APR. 1908.

988,278. Patented Man-28,1911.

4 SHEETS-SHEET 3.

F. B. MILLER, JE-

Patented Mar. 28, 1911 4 SHEETS-SHEET 4.

UNITED STATES PATENT @FFTCE.

FRANKLIN B. MILLER, JR., 0F SPRINGFIELD, MASSACHUSETTS, ASSIGNOR '10 JEROME W. HYDE, 0F SPRINGFIELD, MASSACHUSETTS.

FUR-SEWING MACHINE.

Specification of Letters Patent.

Application filed April 3, 1908.

To all whom it may concern:

Be it known that I, FRANKLIN B. MILLER, Jr., a citizen of the United States of America, residing at Springfield, in the county of Hampden and State of Massachusetts, have invented new and useful Improvements in F ur-Sewing Machines, of which the following is a specification.

This invention relates to improvements in sewing machines and particularly in machines for sewing fur.

The objects of the invention are,-I, to simplify the construction over machines now in use; II, to increase its eificiency during operation, and III, to improve the quality of its work.

WVith these objects in view the invention will be fully described in the specification and particularly pointed out in the appended claims.

In the drawings forming part of this application,Figure 1 is a top plan view with the upper portion of the casing removed showing the general arrangement and location of the operative parts of the machine and particularly the means for operating the looper-shaft or bar. Fig. 2 is a vertical longitudinal sectional view on line 22, Fig. 1, showing in side elevation the eccentric means for operating the needle-bar and looper-frame rod and means for imparting a vertical movement to the looper-frame, also the step-by-step feed-operating mechanism for the fur-feeding disks. Fig. 3 is a vertical sectional view on line 33 of Fig. 2 showing the eccentrics on the main shaft for imparting a reciprocating motion to the needle-bar, looper-frame rod or bar and the cam for rocking the looper-shaft and the eccentric for actuating the feed mechanism. Fig. 4 is a vertical section on line 44 of Fig. 1 showing clearly in side elevation the cam and lever construction for imparting a rocking motion to the looper-shaft proper. Fig. 5 is a detail view of the operating means for the feed-wheels.

Referring to the drawings in detail, a designates the main frame or casting of the machine in which is mounted the main driveshaft 6 in the oppositely extending bearings c and d. The usual pulley and hand-wheels e and f are secured on the opposite ends of the shaft 7).

Suitably secured to the drive-shaft b, as

by set-screws, are the eccentrics g and h for operating the looper-frame rod or bar 2' and the needle-bar j respectively. Also secured to the drive-shaft b is a cam-wheel 70 for imparting a rocking movement to the loopershaft and looper-arm, while a third eccentric m is secured to the shaft 3) for actuating the feeding mechanism, as will be more fully described in referring to the operation and function of the various elements of the machine.

Secured to the looper-frame rod or bar 2' is a collar 1 that is integrally connected to the yoke-arms p and g which, at their lower ends, engage the eccentric g, as clearly shown in Fig. 2. The lower ends of the yoke-arms p and q are connected or joined together by means of the strap 7" so that when the driveshaft 6 is rotated a reciprocating motion will be imparted to the looper-frame rod or bar i which has a hearing at s and t in the main caslng.

Secured to the end of the bar 5 is a headpiece a that has an upwardly extending portion u and to which portion is pivotally connected at the point 'w the looper-frame or casting proper designated at o.

m designates a bearing element or screw with which engages the lower end of a lever a, the same being slotted, as indicated at 2. The upper end of the lever a is connected to a short link 3, by means of the pivot 4, and the link 3 is pivotally connected to the looper-frame c at the point 5. The lever z is pivotally mounted between its ends by means of a stud 6 which has a pivotal bearing in the frame of the machine, as clearly shown in the plan View in Fig. 1, in the bracket 6 As a result of this construction, when the main shaft 6 is rotated and the yoke-arms p and 9 receive a reciprocating movement, the lever a will rock about its pivot 6 and cause, by means of the connecting link 3, a vertical movement about the pivot to to be imparted to the looper-frame o simultaneously with the reciprocating movement of the rod 71 to which said frame is connected, as already described.

Referring now to the eccentric h and its associated parts: the yoke surrounding this eccentric is provided with two arms, only one of which appears at 7 on the drawing. This yoke is the same in construction as the yoke-arms p and g. The upper ends of the aforesaid two arms are connected to a sleeve or bracket 9 which is secured to the needleshaft j by means of the set-screw 10. It is obvious that when the main drive-shaft 7) rotates, the needle-bar will be reciprocated in the frame of the machine in the usual manner, and in unison with the looper-frame and looper-shaft. The end of the needlebar is provided with a needle-clamp 12, the details of which construction form no part of the present invention.

Referring now to the cam-wheel 7a, which is secured to the shaft 7), and the parts associated therewith: this wheel is provided in one face thereof with the cam-groove 13 for receiving the roller 14 that is mounted on the lower arm 15 of the bell-crank lever which is pivoted to the framework on the pin 16, the upper or longer arm 17 of the lever being provided with a slotted end portion 18 for receiving the spherical ball or end portion 19 of the arm 20 of the sleeve 20 which is secured to the rocking looper-shaft 21 by means of the set-screw 20 said shaft having bearings at e and which are a part of the looper-frame o. The purpose of this construction is to impart a rocking movement to the looper-finger 22 which is connected to the part by means of the screw 20" and simultaneously with the vertical and reciprocating movements of the looper-frame 'u. The part 21 designates a looper socket riveted to the looper-shaft 21, as designated at 22 Referring now to the feed mechanism for operating the fur feeding wheels 23 and 24: an eccentric strap 25 surrounds the eccentric m which is secured to the shaft Z) and has a link 26 extending therefrom which is pivot ally attached to an arm 27 at the point 28, which is clearly shown in side elevation in Fig. 2, and in edge elevation in Fig. 3. The arm 27 is carried by the shaft 29 that is pivotally mounted on the pivot-points 30 and 31 adjustably locked in the side portions of the frame a by the set-nuts 32,

Pivotally mounted on the shaft 29 by means of the screw 34 is a cam-shaped piece 35 which is for the purpose of imparting a rocking movement to the lever 36 that is provided with a head 37 and on which is mounted an anti-friction roller 38. The lever 36 is provided with friction blocks 39 and 40 which engage the rim 41 of the friction-wheel 42. The lever or arm 36 is pivoted at 36 about the shaft 43 and on a hub 42 of the wheel 42. The wheel 42 is mounted on the lower end of the shaft 43 and carries at its upper end the feed-wheel 23. The shaft 43 is mounted in bearings 44 and 45 that are cast integral with the frame a.

The friction-blocks 39 and 40 are frictionengaging elements which engage opposite sides of the rim 41 of the wheel 42, and the rim of the wheel is gripped by the blocks 39 and 40 when the lever 36 is rocked in one direction but the friction-blocks will drag on the rim 41 of the wheel 42 when the lever is rocked in an opposite direct on. The space or groove in. the friction-blocks 39 and 40 are slightly inclined to the rim 41 of the wheel 42 so as to permit the gripping and drag effect of the blocks on the rim. The rocking effect of the lever 36 and blocks 39 and 40 therefore impart a step-l ystep movement to the wheel 42. The wheel 42 is provided with a hub 42 and over this hub fits a hub 36 integral with the lever 36. It will be observed that the blocks 39 and 40 have inclined slots or openings 39 and 40 cut therein so as to grip the rim 41 in one direction of the lever 36 and permit the lever and blocks 39 and 40 to drag on the rim 41 of the wheel 42 in the opposite direction. The arrow on Fig. 5 clearly indicates the direction of rotation of the wheel 42. A. spring 36 serves to maintain the roller 38 in contact with the cam 35 and at all times the springs 39 and 40 serve to maintain the blocks 39 and 40 in contactwith the notches 36* of the hub of the lever 36; and pins 36 are provided for attaching the other end of the springs. From this construction it is clear how the wheel 42 is propelled in a step-by-step movement.

Secured to the frame a is a bracket 46 in which is cut or milled an inclined slot 47 one edge of which is provided with teeth or serrations 48. Extending through this slot an arm 49 secured to a rod 50 that extends longitudinally through the shaft 29 and has its inner end 51 in engagementwith the cam element This rod extends loosely through the bearing 31 whereby when the arm 49 is moved the rod 50 is advanced or retracted from the cam element 35 and is at the same time locked in its various positions by means of the serrations or teeth 48. A spring 52 is mounted between the nut 33 and the arm 49 for the purpose of maintaining the lever 49 in its locked position. The purpose of this construction is to vary the amount of movement on the lever 36 which drives the feed wheel 23 whereby the feed or angular movement thereof is varied.

The wheel 24, (which is normally held in engagement with the wheel 23) is mounted on the lower end of the arm 53 that extends downward, as indicated at '54, and has an outwardly projecting portion or arm 55 that is secured to the bearing piece 56 which is integral with the lever 57. This lever is pivoted to the frame of the machine at 58, and is normally held downward by means of the compression spring 59 that encircles the rod 60 mounted in the bracket 61. The efiect of the spring 59 is to normally hold the wheel 24 in engagement with the wheel 23, whereby the fur is clamped and fed between the serrated or milled edges of the wheels 23 and 24: in the well known manner.

What I claim, is

l. The combination with the drive-shaft of a sewing machine, a pivotally mounted looper-frame, an eccentric on said shaft, yoke-arms engaging the said eccentric, a lever connected to the yoke-arms, a link connecting said lever and the looper-frame, whereby a vertical movement may be imparted to said looper-frame, substantially as described.

2. A fur sewing machine having in combination, a main shaft, a bar, an eccentric on the main shaft, means connected with the eccentric and bar for reciprocating the same, a looper-frame actuated by the bar, and a link connection between the eccentric and the frame, whereby the frame is moved in a vertical plane simultaneously with the reciprocating movement thereof.

3. A fur-sewing machine having in combination, a frame, a main-shaft, a rock-shaft pivotally mounted in the sides of the frame, a cam element pivotally mounted on the rock-shaft, a rod axially arranged with relation to the rock-shaft, and engaging the cam element, and means for adjusting and locklng said rod.

4. A fur-sewing machlne having in combination, a frame, a main-shaft, a rock-shaft' pivotally mounted in the sides of the frame, a cam element pivotally mounted on the rock-shaft, a rod axially arranged with relation to the rock-shaft and engaging the cam element, and means for adjusting and locking said rod, including a bracket element having an inclined slot therein, a spring on the rod, and a handle member engaging the slot, as described.

5. The combination with the drive-shaft of a sewing machine, alooper-shaft, a looperframe pivoted thereto, an eccentric on said shaft, yoke-arms engaging said eccentric and connected to the looper-shaft, a lever connected to the yoke-arms, a link connecting said lever and looper-frame, whereby simultaneous reciprocating and vertical movements will be imparted to the looperframe, substantially as described.

FRANKLIN B. MILLER, JR.

WVitnesses:

K. I. CLEMoNs, H. W. BOWEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

